Module: Insolation
(c) 2006 by O.Conrad
Menu: Terrain Analysis > Lighting
Description
Calculation of incoming solar radiation (insolation). Based on the SADO (System for the Analysis of Discrete Surfaces) routines developed by Boehner & Trachinow.

References:

Parameters
NameTypeIdentifierDescriptionConstraints
Input
Elevation Grid (input)GRD_DEM
Water Vapour Pressure [mbar] (*)Grid (optional input)GRD_VAPOUR
Latitude [degree] (*)Grid (optional input)GRD_LAT
Longitude [degree] (*)Grid (optional input)GRD_LON
Output
Direct Insolation (*)Grid (optional output)GRD_DIRECT
Diffuse Insolation (*)Grid (optional output)GRD_DIFFUS
Total Insolation (*)Grid (optional output)GRD_TOTALTotal insolation, the sum of direct and diffuse incoming solar radiation.
Options
Horizontal ProjectionBooleanBHORIZON
Solar Constant [J]Floating pointSOLARCONSTMinimum: 0.000000
Height of Atmosphere [m]Floating pointATMOSPHEREMinimum: 0.000000
Water Vapour Pressure [mbar]Floating pointVAPOURThis value is used as constant if no vapour pressure grid is given.Minimum: 0.000000
Time PeriodChoicePERIODAvailable Choices:
[0] moment
[1] day
[2] range of days
[3] same moment for a range of days
Daily Time Resolution [h]Floating pointDHOURTime resolution for a day's calculation.Value Range: 0.000000 - 24.000000
Range of Days Time Resolution [days]IntegerDDAYSTime resolution for a range of days calculation.Minimum: 1.000000
Day of YearIntegerDAY_A
Day of Year (Range End)IntegerDAY_B
Moment [h]Floating pointMOMENTValue Range: 0.000000 - 24.000000
LatitudeDegreeLATITUDEValue Range: -90.000000 - 90.000000
Planetery BendingBooleanBENDING
Planetary RadiusFloating pointRADIUSMinimum: 0.000000
Latitude relates to grid's...ChoiceLAT_OFFSETAvailable Choices:
[0] bottom
[1] center
[2] top
[3] user defined reference
Local time relates to grid's...ChoiceLON_OFFSETAvailable Choices:
[0] left
[1] center
[2] right
[3] user defined reference
Latitude (user defined reference)Floating pointLAT_REF_USER
Local Time (user defined reference)Floating pointLON_REF_USER
Direct InsolationBooleanUPD_DIRECT
Diffuse InsolationBooleanUPD_DIFFUS
Total InsolationBooleanUPD_TOTAL
(*) optional